The ATM LANE dual PHY module (UTP) provides one direct connection and one standby connection between the ATM network and the switch using two RJ-45 connectors. The module reassembly of up to 255 buffers simultaneously; each buffer represents a packet. It also support for up to 4096 virtual circuits. It support for ATM adaption layer (AAL) 5. The LEDs provide status information for the module and the individual ATM port connections.